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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) [Abstract]
Net loss	$ (7,605)	$ (3,894)
Other comprehensive gain (loss), net of tax:
Change in equity adjustment from foreign currency translation, net of tax	0	(1)
Change in unrealized gain (loss) on investments, net of tax	1	(4)
Total other comprehensive gain (loss) net of tax	1	(5)
Comprehensive loss	$ (7,604)	$ (3,899)

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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